Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:54:05 2012 Optimize a model with 1 rows, 21 columns and 21 nonzeros Model has 98 quadratic objective terms Modified 21 Q diagonals Presolve time: 0.01s Presolved: 1 rows, 21 columns, 21 nonzeros Presolved model has 119 quadratic objective terms Variable types: 0 continuous, 21 integer (21 binary) Found heuristic solution: objective 49.0000000 Root relaxation: objective 0.000000e+00, 23 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 21 49.00000 0.00000 100% - 0s H 0 0 46.0000000 0.00000 100% - 0s H 0 0 41.0000000 0.00000 100% - 0s H 0 0 40.0000000 0.00000 100% - 0s 0 2 2.61664 0 21 40.00000 2.61664 93.5% - 0s * 267 200 12 39.0000000 8.91365 77.1% 2.1 0s H 391 230 37.0000000 11.92366 67.8% 2.1 0s H 654 311 36.0000000 14.20038 60.6% 2.1 0s H 681 300 35.0000000 14.20038 59.4% 2.1 0s H 1065 284 34.0000000 17.44333 48.7% 2.1 0s Explored 5216 nodes (10692 simplex iterations) in 0.25 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.400000000000e+01, best bound 3.400000000000e+01, gap 0.0%